21253100324301 has 48 divisors (see below), whose sum is σ = 34117930863744. Its totient is φ = 13186412293824.

The previous prime is 21253100324249. The next prime is 21253100324327. The reversal of 21253100324301 is 10342300135212.

21253100324301 is a `hidden beast` number, since 2 + 1 + 2 + 5 + 31 + 0 + 0 + 324 + 301 = 666.

It is not a de Polignac number, because 21253100324301 - 2¹⁸ = 21253100062157 is a prime.

It is a super-2 number, since 2×21253100324301² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21253100324341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51180586 + ... + 51594171.

It is an arithmetic number, because the mean of its divisors is an integer number (710790226328).

Almost surely, 2^{21253100324301} is an apocalyptic number.

It is an amenable number.

21253100324301 is a deficient number, since it is larger than the sum of its proper divisors (12864830539443).

21253100324301 is a wasteful number, since it uses less digits than its factorization.

21253100324301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102774832 (or 102774820 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 21253100324301 its reverse (10342300135212), we get a palindrome (31595400459513).

The spelling of 21253100324301 in words is "twenty-one trillion, two hundred fifty-three billion, one hundred million, three hundred twenty-four thousand, three hundred one".